Reliant EMC

Coupling/Decoupling Networks (CDN)

The Coupling- / Decoupling Networks are used to inject common mode disturbances to Equipment under Test (EuT).
Further the CDNs provide sufficient decoupling between Auxilary Equipment (AE) and disturbance signal.
The requirements for CDN and their application are described in the standard IEC 61000-4-6 (Immunity to conducted disturbances, induced by radio-frequency fields).
CDNs have a common mode impedance of 150 Ohm and are available for a multitude of cable types and connectors.
Schwarzbeck CDN Quick Selection Decision Tree

Schwarzbeck-CDN-Cable-Overview-Data-Sheet

CDN M-Type

Schwarzbeck CDN M-Type

• CDN for MAINS LINES M-Type
· CDN M1 16A
· CDN M2 16A 1000V
· CDN M2 32A 1000V
· CDN M2 63A 1000V
· CDN M2 125A 1000V
· CDN M3PE 16A
· CDN M3 32A
· CDN M3PE 32A
· CDN M2/M3PE 16A
· CDN M4 16A
· CDN M4PE 16A
· CDN M4 32A
· CDN M4 32A 1000V
· CDN M4PE 32A
· CDN M5PE 16A
· CDN M5PE 32A
· CDN M5PE 32A 1000V
• CDN for UNSCREENED, UNBALANCED LINES AF-Type
· CDN AF2
· CDN AF3
· CDN AF4
· CDN AF6
· CDN AF8
• CDN for SCREENED LINES S-Types
· CDN S4 4xBNC
· CDN S4 XLR4
· CDN S8 RJ45
· CDN S9 USB3.0
· CDN S19 HDMI
· CDN S24 USB-C
· CDN S25 SUBD
• Amplifier and attenuator for conducted immunity testing with CDNs
· VBA230-80
· DG 150W 4GHz 6dB
· SR 100-6W SR 30/4
A-Type CDN for coaxial antenna inputs

CNA 280
Schwarzbeck CNA 280
The CNA280 meets the specifications of the standard CISPR 16-1-2 A1, figure C1 (unit type A) and CISPR 16-1-3, app. B,Fig. 9.
It is also required to calibrate EMI absorbing clamps like the MDS 21.
pdficon small Datasheet CNA 280 
pdficon small CDN Selection Guide
pdficon small CDN Adapter Guide

M Series CDN (Coupling / Decoupling Network)
M series for mains application
Frequency range 10 kHz to 80 MHz, 150 kHz to 230 MHz
IEC/EN 61000-4-6

pdficon small Datasheet CDN M Series
pdficon small CDN Selection Guide
pdficon small CDN Adapter Guide
S Series CDN (Coupling / Decoupling Networks)
S series for screened or coaxial cables
IEC/EN 61000-4-6
 
pdficon small Datasheet CDN S Series
pdficon small CDN Selection Guide
pdficon small CDN Adapter Guide

T Series CDN (Coupling / Decoupling Networks)
T series CDN for unscreened balanced pairs
IEC/EN 61000-4-6
 
pdficon small CDN Selection Guide
pdficon small CDN Adapter Guide

AF Series CDN (Coupling / Decoupling Network)
Used for all unscreened, unbalanced lines
Frequency range 10 kHz to 80 MHz, 150 kHz to 230 MHz
IEC/EN 61000-4-6

pdficon small Datasheet CDN AF Series
pdficon small CDN Selection Guide
pdficon small CDN Adapter Guide

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